Ullmann Spur () is a mountainous ridge, 275 m, situated centrally at the head of Martel Inlet, Admiralty Bay, on King George Island in the South Shetland Islands. Charted and named by the French Antarctic Expedition, 1908–10, under Charcot.
This article incorporates public domain material from the United States Geological Survey document "Ullmann Spur" (content from the Geographic Names Information System).